Well I have to say in that case 22 degrees is not cold - with high humidity it can be downright unpleasant. Definitely starting to enter t-shirt territory.
If they honestly are referring to 22 degrees as "cold" and "freezing", then, well, sucks to be them.
Yes. It's a shame that they're so ill, but that shouldn't give them the right to make other people suffer.
I sometimes wonder if V was closer to the truth than people think. Lizards have very little ability to regulate their body temperature and generate heat internally, so they require a much higher temperature. Perhaps people who think that 22C is as cold as 0C are in fact lizards.